Combination lock switch



Degz. 10, 1929 A. R. KLINGENSMITH l3739,003

COMBINATION LOCK SWITCH Filed Dec. 6. 1927 3 Sheets-Sheet l 1929- A. R.KLINGENSMITH v ,739,003

COMBINATI 0N LOCK SWI TCH Filed Dec. 6. 1927 3 Sheets-Sheet 2 ELL 3 \SWr1 470 Y Dec. 10, 1929. A. R. KLINGENSMITH 1,739,003

COMBINATION LOCK SWITCH Filed Dec. 6. 1927 3 Sheets-Sheet 3 PatentedDec. 10, 1929 U D STATE-s PATENT-7 OFF p ADDISON it. K INGENSMI H, or'renimssus, PENNSYLVANIA oo uia'nvarron' LOCK swiron" A plication aieanecember e, 1927'." Serial No. 238,069.

This invention relates'to a means for 0011- trolling thefignitionsparkdeliveredby a bat tery to the combust on c'l'iambers'ofan 1nternalcombustion engine, used largely as motive 5 power in automobiles or forotherpurposes.

It-comprises a series of outwardly extending movable operating levers,which when properly set will form one or more complete cir cuitsto aseries of combustion chambers, and to independent points governing othercircuits suchas lighting systems, motor control systems, etc, as will behereinafter described.

The principal object ofthe present invention is to prevent automobilethieves, or other unauthorized parties from operating aparked orotherwise abandoned car, and to render it-impossible, within a shorttime, to complete a necessary circuit to start the engine of the car.The invention comprises an arrangement of parts and levers to beoperated by those knowing a certain combinationof said movement oflevers. v

The invention further consists in the details of construction andcombination of parts, as will be fully described hereinafter.

In the accompanying drawings:

Figure l is a sectional plan view of my improved device fo making andbreaking the electric circuit from the battery to the combustion chamberor an internal combustion engine and lighting systems used in anautomobile or other driving means. The section being taken approximatelyon the line XY of Figure 2 or" thedrawings.

Figure 2 is a front view of the same.

Figure 3 is a rear elevation of the contact plate and movable contacts.

Figure 4 is a face view of said cont-act plate removed from theapparatus.

Figure 5, is a perspective view of one of the operating levers, detachedfrom the ap-' paratus.

Figures 6, 7 and 8 are detached. detail views of the parts, rigidlyconnected to the above mentioned operating lever.

Figure 9 is an enlarged central sectional view of a modified form of oneof the said operating levers and its various component parts assembled.

Figure 10 is a front face view of the same.

Figure 11,- isa detail sectional view of= the lever socket of theoperating levershowing a modified formin'which'the body is constru'ctedin-two parts joined together, said construction adapted to facilitate ormake easy the formation ofthe hollow 'spherical groove. l

Figure 12 is a front viewof the same.

Figure 13 is a face view of a portion ofthe contact plate showingamodified form of the same.

Figurelt is a face view'of a modifiedlform of one of the several movablecontacts, do; tached from the operating lever, and

Figure 15, is an edge view'ofthe-same;

To "construct a device in accordance with 'my invention and therebyafford a' means that -will efi'ectuallyw prevent the starting ofthemotive power, without knowing the combination,a box'and coverare'provided, adapted to be fastenedin front ofthedriven-pref erablydirectly in front "and within easyreach of the same. This box l, is toreceive is composed of several'parts, they being sup ported and operatedin the several openings 7. The exposed-endllyof the plug is pro videdwithan integral handle 10, (as shown in Figures 1, 2, 5 and 9) or saidhandle may be loosely*connectediin sockets 12, (see'Fig ures 9 and- 10)the leverportion having at one end a balll3, with outwardly projectinglug 13, operating in a groove 14. i l r This groove 14, and lug 13',will engage with each other=and-permit the -plug to' be revolved aboutits center, and also permit the lever 10, to assume averticalpositioniby gravitation. 1 y Thebarrel of each-f plug consists of three piecescarrying interposed parts, one 15, of

which keeps the plug is position. Another 16, positions the contactfinger 17 in place and also supports the inner end of the plug and theseveral parts held rigidly together by suitable screws or rivets 18.

These contact fingers 17 consist of strips of metal and may be formed invarious shapes, (as shown at Figure 1, 3, 6, 9 and 14) as circumstancesrequire.

Arranged in circular form about each plug and carried by supportingplates 5 and 6 are a multiplicity of stationary contact plugs 19, aselect number of which are connected to the active circuits, the largemajority being inactive and put in place to deceive and render thechances of unauthorized persons attempting to complete one or morecircuits, highly improbable and almost impossible in a short period oftime, without knowing the combination.

The several electrical conductors A and B see Figure 1) are attached tothe battery not shown) and to the selected contact points 19. Thecircuits in this case lead to the several combustion chambers and to thelighting apparatus, or to any other desired point where motive power orother service is required.

In operation :-By the aid of a knob 4, (Figure l) the door of the coveris opened, exposing the series of levers 10, to view. It will bediificult for the operator to single out the proper levers to move inorder to complete the circuit to any desired point, such as thecombustion chambers or to the lighting circuit, as the number of contactpoints may be increased to and including several thousand. As the leveris moved an audible sound is made, as each point 20, passes over eitherthe contact 19, or any of the slight depressions 21, which are not inthe circuit.

At Figure 3 of the drawings, I have shown two plates, each formed withthose above mentioned depressions and contact points. The one plate 21,is in circuit with the lighting apparatus and the other 21 is for themotive power.

It will be seen that any person, not knowing the exact combination ofnumbers or letters, if such are indicated, or the exact position of thelevers 10, as presented from the front of the box 1, will not be able tocomplete the circuit.

This will deprive any thief from operating a car equipped with thisimprovement unless he has several hours to work out the combination.

It is obvious that the deatils of construction may be changed withoutdeparting from the spirit of the invention.

What I claim as new is 1. In combination with a lock of the characterdescribed, a rotatable plug provided with a spherical recess having anannular groove with a pocket, a loose lever having a spherical head witha radial projection operating within said recess, and a means forloosely holding the two parts together.

2. In combination with a lock of the character described, a rotatablecylindrical plug, provided with a spherical recess having an annulargroove and pocket, a loose lever having a spherical head provided with aradial projection to engage with said pocket and a contact arm fixed tothe inner end of the said plug.

3. In combination with a lock of the character described, a rotatableplug provided at one end with a spherical recess having an annulargroove with a pocket, a finger lever formed with a spherical head andintegral. radial projection operating within said spherical recess andpocket, a means for holding the parts together and contact fingers fixedto the inner end of said plug, in such manner, that the lever when atrest will assume a vertical position by gravitation.

ADDISON R. KLINGENSMITH.

